To run the entire test suite, including tests that depend on external
dependencies, Symfony2 needs to be able to autoload them. By default, they are
autoloaded from vendor/ under the main root directory (see
autoload.php.dist).

The test suite needs the following third-party libraries:

Doctrine

Swiftmailer

Twig

Monolog

To install them all, run the vendors script:

1

$ php vendors.php install

Note

Note that the script takes some time to finish.

After installation, you can update the vendors to their latest version with
the follow command: